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Summary of Significant Accounting Policies - Narrative (Details) - USD ($)
9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Dec. 31, 2019
Property, Plant and Equipment [Line Items]      
Valuation allowance $ 12,400,000    
Accrual for tax uncertainties $ 0   $ 0
Frenchman's Reef      
Property, Plant and Equipment [Line Items]      
Proceeds from business interruption insurance   $ 8,800,000  
Minimum | Land, Buildings and Improvements      
Property, Plant and Equipment [Line Items]      
Useful life 5 years    
Minimum | Furniture, fixtures and equipment      
Property, Plant and Equipment [Line Items]      
Useful life 1 year    
Maximum | Land, Buildings and Improvements      
Property, Plant and Equipment [Line Items]      
Useful life 40 years    
Maximum | Furniture, fixtures and equipment      
Property, Plant and Equipment [Line Items]      
Useful life 10 years